-----Original
Message-----
From: David
Martin [mailto:dwmartin@xxxxxxxxxxxxxxxxxx]
Sent: Monday, February 10, 2003 3:00
PM
To:
stds-802-3-efm@ieee.org
Subject: RE: [EFM] Question regarding
OAM in 802.3ah D1.3
Shahram,
This
question is somewhat out of scope wrt EFM, but the answer is yes, the EFM
OAMPDU flow must be terminated at the Provider Edge. Otherwise it would flow
through the provider's SONET network and get mixed in with a separate EFM
OAMPDU flow at the far end.
SD=> Which
separate OAMPDU flow? do you mean from ONU2 to OLT2?
Note that you
have the terms ONU / OLT reversed.
So the
ONU is the customer side?
This
"filter function" is being defined in the ITU-T SG15 / Q.12 work in draft
G.ethna (was G.etna) and in the OIF UNI v2.
Thanks
I will have a look.
The
PE-PE, or SONET portion is not an EFM link, but rather a SONET path, which
has its own OAM (i.e. POH).
Agree.
...Dave
David W.
Martin
Nortel Networks
dwmartin@xxxxxxxx
+1 613 765-2901
(esn 395)
~~~~~~~~~~~~~~~~~~~~
-----Original
Message-----
From: Shahram
Davari [mailto:Shahram_Davari@xxxxxxxxxxxxxx]
Sent: Monday, February 10, 2003 2:13
PM
To:
stds-802-3-efm@ieee.org
Subject: [EFM] Question regarding OAM
in 802.3ah D1.3
802.3ah section 57 says that the
OAM defined is for single link (or emulated link), and should not be
forwarded by bridges/switches.
My question is, in case of
Ethernet over SONET transport (GFP + Virtual concatenation), should the
OAMPDU be terminated at the EOS device or it should be transparently
transported?
OLT1 -------------- ONU
1------------------ ONU 2 ------------ OLT 2
Assume OLT1 and OLT2 are the
customer equipments and ONU1 and ONU2 are provider
transport equipments that
transport Ethernet over SONET (but don't do any
switching/bridging).
In this case should ONU1
terminate OAMPDUs from OLT1 or it should sent them transparently to
OLT2?
In other words is OLT1--ONU1
considered a single link? what about ONU1 to ONU2, is this also a
link?
Shahram Davari
Senior Product
Research Engineer
R&D Research Ottawa
PMC-Sierra, Inc.
Phone:
(613) 271-4018
Fax: (613) 271-6468